ive got a blue top large port, story is i redone the head last wk and the mechanic put it together shonkly plugs out wires everywhere!!! worse thing was he didint bolt the exhaust to the gasket and the xhaust obviously hot has touched these wires and fried the crap outta the wires, b4 realising this i had already bought new dizzy and coil pack which was bit of a waste ah well they looked like they need replacing, got a bigger coil pack too. i think its the computer fried!! so yeah I'm so frustrated i just wanna fix this problem and get sliding again!!!